eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2023-09-30 20 3 845 856 10.13005/bbra/3136 46990 article Sumita Sahoo 1 Biswajit Rath 1 Keshab C. Mondal 3 Suman Kumar Halder 3 Arpita Mandal 3 Department of Biotechnology, Maharaja Sriram Chandra Bhanja Deo University, Baripada- 757 003, Odisha, India Department. of Microbiology, Asutosh College, Kolkata-700 026, West Bengal, India Department. of Microbiology, Vidyasagar University, Midnapore-721 102, West Bengal, India Present agriculture sector mostly depend on synthetic fertilizer for better crop. Feather is a rich source of protein and nitrogen. It was degraded by Keratinolytic bacteria Bacillus wiedmanni SAB10  in poultry litter sole media.  Feather hydrolysate was produce from solid state fermentation process and fermentation condition was optimized through OVAT (One Variable At  A Time) system. In this process feather (1.25%w/v)  was fully degraded in poultry litter(1%w/v)   with in 48 hrs at pH 10.After the fermentation cell free feather hydrolysate use in rice plant in different concentration and different mode. Liquid feather hydrolysate produced from solid state fermentation contain important amount of protein (3.12mg/ml) and amino acid(792µg/ml) that enhances the rice plant growth in pot trial condition.    After application Group D Plants leaves have been reported to have higher levels of total chlorophyll (5.25mg/g of dry wt), IAA (17.23µg/ml)..Carbohydrate contain of rice has increased 1.6 fold than control Following the spraying of feather hydrolysate (300 µl/ml), the phenolic (1.71 fold) and flavonoid (1.52 fold) contents significantly increased.. The novelty of our investigation is we use here two wasted products and convert them a valuable product. https://www.biotech-asia.org/vol20no3/production-optimization-of-feather-hydrolysate-and-use-as-a-promising-nitogen-rich-fertilizer-for-rice-oryza-sativa-production/ Agro ecosystem; Bacillus wiedmanni; Feather hydrolysate; SAB10  Rice plants